5.2 tweaks

Tested by a couple of people on the mailing list. All working, but something is still installing nginx 1.2.2 in /usr/sbin/nginx.

Make devel install verbose for easier debugging
Use a stock php.ini-production and separate out our changes
Fix nginx user
set -xv doesn't do anything :(
Remove non-existent log file from admin UI
Reduce worker_connections to fit into OpenBSD limits
Reduce keepalive to recycle connections faster
Note about alternative packages that the installer asks about
Store PHP sessions in a ramdisk
Fix RoundCube suhosin settings
Fix insecure nginx PHP config
Add and use gsed to fix nginx fastcgi params
Fix sed regex